U4223B ATMEL Corporation, U4223B Datasheet - Page 11

• Manufacturer Part Number: U4223B
• Description: Time-code Receiver With A/d Converter
• Manufacturer: ATMEL Corporation

Rev. A7, 06-Mar-01
Application Circuit for JG2AS 40 kHz
680 pF
f
res
C
Antenna
Ferrite
1
= 40 kHz
40 kHz
220 nF
C
10 nF
2
C
2)
3
1 MW
R
+V
10
CC
4
5
6
7
8
9
1
2
3
U4223B
16
19
18
14
12
13
11
20
17
15
Figure 22.
40 kHz
10 nF
10 nF
10 nF
10 nF
SL
1)
PON
1)
2)
3)
4)
Voltage swing 100 mV
D0
D1
D2
D3
If SL is not used, SL is connected to VCC
40-kHz crystal can be replaced by 22 pF
If IC is activated, PON is connected to GND
CLK
3)
4)
Control lines
Microcomputer
Display
pp
U4223B
at Pin 12
Keyboard
11 (18)